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Simple multi-task operating system

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专利汇可以提供Simple multi-task operating system专利检索,专利查询,专利分析的服务。并且PURPOSE: To increase the number of tasks subjected to multi-task processing by loading a background task program to a non-resident area of a main memory only at the time of execution, and eliminating it after the processing.
CONSTITUTION: Position information on a main memory at the time when a background task is subjected to loading to a non-resident area (non-resident background task area 2) of the main memory is stored in a loading information table 4 (step 105). while referring to this table 4, based on a request of a foreground task or a background task subjected to loading already in a resident area of the main memory, other background task is subjected to loading to the non-resident area of the main memory, and eliminated after its processing is finished (steps 102, 103, 107). In such a way, many background tasks are processed in parallel irrespective of whether the capacity of the non-resident area of the main memory is large or small.
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